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  • mysql delete数据恢复

    前提: 开启binlog、数据库名、操作日期

    步骤:找到对应的binlog、解码、将delete翻译为insert

    1.查看binlog是否开启

    show variables like '%log_bin%';

    2.查看数据文件存放路径:bin-log路径

    show variables like '%datadir%';

    3.找到删除时间段的binlog,翻译为sql

    mysqlbinlog --base64-output=decode-rows -v --database=数据库名 --start-datetime="2021-08-19 16:40:00" --stop-datetime="2021-08-19 16:50:00" "D:Program Filesmysql-5.7.34-winx64mysqldbin.000041" > d:mysqllog.sql

    4.在生成的 mysqllog.sql 文件同路径下 ,生成将delete翻译为insert的sql文件

    linux:
    cat mysqllog.sql | sed -n '/###/p' | sed 's/### //g;s//*./,/g;s/DELETE FROM/;INSERT INTO/g;s/WHERE/SELECT/g;' |sed -r 's/(@17.),/1;/g' | sed 's/@1=//g'| sed 's/@[1-9]=/,/g' | sed 's/@[1-9][0-9]=/,/g' > mysqllogOK.sql
    windows:
    在生成的sql文件同目录下,创建.vbs文件,写入如下内容,并双击执行
    '==========================
    '用VBS实现 MYSQL binglog DELETE转INSERT
    '==========================
    function replaceregex(patern,str,tagstr)
    dim regex,matches
    set regex=new regExp
    regex.pattern=patern
    regex.IgnoreCase=true
    regex.global=true
    matches=regex.replace(str,tagstr)
    replaceregex=matches
    end function

    'Mysql binlog DELETE转INSERT==========
    'VBS打开文本文件
    Set oldStream = CreateObject("ADODB.Stream")
    oldStream.CharSet = "utf-8"
    oldStream.Open
    oldStream.LoadFromFile("mysqllog.sql") 'binLog生成的DELETE原日志文件
    oldText = oldStream.ReadText()
    newText=replace(oldText,"### DELETE FROM", ";INSERT INTO")
    newText=replace(newText,"### WHERE", "SELECT")
    newText=replace(newText,"###", "")
    newText=replace(newText,"@1=", "")
    newText=replaceregex("@[1-9]=",newText, ",")
    newText=replaceregex("@[1-9][0-9]=",newText, ",")
    oldStream.Close
    'VBS保存文件
    Set newStream = CreateObject("ADODB.Stream")
    newStream.Type = 2 'Specify stream type - we want To save text/string data.
    newStream.Charset = "utf-8" 'Specify charset For the source text data.
    newStream.Open 'Open the stream And write binary data To the object
    newStream.WriteText newText
    newStream.SaveToFile "mysqllogOK.sql", 2 'DELETE转成INSERT以后的新的SQL文件名
    newStream.Close

    5.打开生成的sql文件找到相应的insert

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  • 原文地址:https://www.cnblogs.com/mznsndy/p/15162775.html
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